US 12,219,696 B2
Electronic device
Sungjune Park, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jan. 7, 2021, as Appl. No. 17/143,361.
Claims priority of application No. 10-2020-0018622 (KR), filed on Feb. 14, 2020; and application No. 10-2020-0038346 (KR), filed on Mar. 30, 2020.
Prior Publication US 2021/0259093 A1, Aug. 19, 2021
Int. Cl. H05K 1/02 (2006.01); G02F 1/1333 (2006.01); H05K 1/11 (2006.01)
CPC H05K 1/028 (2013.01) [G02F 1/133305 (2013.01); H05K 1/118 (2013.01); B32B 2307/21 (2013.01); B32B 2457/20 (2013.01); C09K 2323/04 (2020.08); G02F 2202/22 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electronic device comprising: a display panel;
a protection film which faces the display panel, the protection film comprising:
a first anti-static layer which defines a first surface of the protection film which is closest to the display panel;
a second anti-static layer which faces the first anti-static layer and defines a second surface of the protection film which is opposed to the first surface;
a polyimide film between the first anti-static layer and the second anti-static layer;
the first surface of the protection film which is defined by the first anti-static layer having a surface resistance and a polar surface energy of about 12 millinewtons per meter or more and about 22 millinewtons per meter or less; and
the polyimide film having a surface resistance and a surface energy of about 39 millinewtons per meter or more; and
an adhesive layer which forms an interface with the first surface of the protection film and attaches the protection film to the display panel, the adhesive layer having a top surface which forms an interface with the display panel and has a surface resistance,
wherein
the surface resistance of the polyimide film is greater than the surface resistance of the first surface of the protection film, and
the surface resistance of the top surface of the adhesive layer is greater than the surface resistance of the first surface of the protection film and lower than the surface resistance of the polyimide film.